Caster & Camber VS Height

The shops I've been dealing with don't have a problem with using a custom alignment spec. The problem is that they don't seem to understand the alignment procedure for an a-body even though I bring my FSM, which increases the time the car is on the rack.

The only time they got the alignment around where I wanted it was when the LCAs were pretty much riding on the bumpers. It was low enough for rough pavement to put a dent in my oil pan so we had to raise it up to where is it now (~ 8-3/4" from adjusting blade to floor, P195/75R14 tires).

It looks like I misunderstood how camber changes with height and installing the offset bushing kit is pretty much unavoidable to get the alignment I want.

My car has the slant six stock torsion bars and a 1-1/8" Addco front stabilizer bar. The car is mainly highway-driven and is never raced. Any advice about what would be good height setting so that my car is low enough to rarely bottom-out on bumps?